CVE-2023-1759:Stored Cross-site Scripting (XSS) vulnerability in phpMyFAQ before version 3.1.12

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A stored cross-site scripting (XSS) vulnerability was discovered in phpMyFAQ versions prior to 3.1.12. This vulnerability allows attackers to inject malicious JavaScript code that is stored on the server and executed when other users view the affected page. The vulnerability occurs due to insufficient input validation and sanitization of user-supplied data that is later displayed to other users.

Overview

The vulnerability exists in the phpMyFAQ content management system, a popular open-source FAQ management solution. The stored XSS vulnerability allows attackers to inject malicious scripts that become a permanent part of the website. When other users, including administrators, access the affected page, the malicious code executes in their browser context, potentially leading to session hijacking, credential theft, or other client-side attacks. This vulnerability is particularly dangerous because the malicious payload persists in the database and affects all users who view the compromised content, unlike reflected XSS which requires individual victim interaction with a specially crafted link.

Remediation

To remediate this vulnerability:

  1. Update phpMyFAQ to version 3.1.12 or later, which contains the security patch
  2. If immediate updating is not possible, implement additional input validation and output encoding for user-supplied content
  3. Consider implementing a Content Security Policy (CSP) as an additional layer of defense against XSS attacks
  4. Review all user-submitted content for potential malicious code that may have been injected before the patch was applied
  5. Ensure proper HTML encoding is applied to all dynamic content before rendering it in web pages

References

  1. Patch commit: https://github.com/thorsten/phpmyfaq/commit/ecbd8107fe954b6be95dab315862d1caa0b94efa
  2. Vulnerability details and exploit information: https://huntr.dev/bounties/e8109aed-d364-4c0c-9545-4de0347b10e1
  3. OWASP XSS Prevention Cheat Sheet: https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html
  4. phpMyFAQ official website: https://www.phpmyfaq.de/

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Accommodation & Food Services
    Accommodation & Food Services
  2. Administrative, Support, Waste Management & Remediation Services
    Administrative, Support, Waste Management & Remediation Services
  3. Agriculture, Forestry Fishing & Hunting
    Agriculture, Forestry Fishing & Hunting
  4. Arts, Entertainment & Recreation
    Arts, Entertainment & Recreation
  5. Construction
    Construction
  6. Educational Services
    Educational Services
  7. Finance and Insurance
    Finance and Insurance
  8. Health Care & Social Assistance
    Health Care & Social Assistance
  9. Information
    Information
  10. Management of Companies & Enterprises
    Management of Companies & Enterprises
  11. Manufacturing
    Manufacturing
  12. Mining
    Mining
  13. Other Services (except Public Administration)
    Other Services (except Public Administration)
  14. Professional, Scientific, & Technical Services
    Professional, Scientific, & Technical Services
  15. Public Administration
    Public Administration
  16. Real Estate Rental & Leasing
    Real Estate Rental & Leasing
  17. Retail Trade
    Retail Trade
  18. Transportation & Warehousing
    Transportation & Warehousing
  19. Utilities
    Utilities
  20. Wholesale Trade
    Wholesale Trade

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